Tachometer or speed-indicator.



. 812,937 PATENTED FEB. 20, 1906.

V. KOBLIZEK.

TAGHOMETER OR SPEED INDICATOR.

' APPLICATION FILED Jun 14, 1904.

mam/zsrrrrss TACHOIWETER OR SPEED-ENEJECA'HTOR.

No eraser.

Specification of Letters Patent.

Patented Feb. 20, 1906.

Apnlication filed June 14, 1904- Serial No. 212,510.

Be it known that l, VINZENZ KOBLIZEK, inzlliilizlCiuIl-l, a subject of the Emperor of :"Lustriadlungary, and a resident of Salmthal, Bohemia, inthe Austrian Empire, have invented certain new and useful Improvements in 'lachometers or Speed-Indicators, of which the following is a specification.

My invention relates to certain new and useful improvements in tachometers orspeedimlicarors for rotary motion, and has for its object to improve this kind of devices in such a manner that. besides greatest simplicity, they excel all similar apparatus by most solid construction, by absolutely reliable working, and lreedom from trembling motion. I obtain the said objects by the mechanism hereinafter described, and shown upon the annexed drawing. in which a vertical section of a tachometer according to my invention is illustrated.

Similar letters rel'erto similar parts throughout the .lescri1.)tion.

r rccording to the drawing, the belt-pulley a turns the shaft I). Upon the latter there is arranged the fixed socket c and the shiitable socket 4!. Both are united through springs with the centrifugal weights e. During the rotation the socket cl moves to the left in consequence of the centrifugal movement of the weights 0 and carries with it the angular toothed gear f. The latter actuates the indicator 7, on an empirical scale of which the speed can be read directly. On the socket d are further arranged the alarvwclappers 72 which on the maximum speed being, exceeded cause the bell i to ring continuously.

The main advantage of my new invention is, beyond its simplicity, the great regularity in its working, owing to the springs.

,Having thus described my invention, I claim as new In a speed-indicator, in combination, a rotatable shaft, a stationary sleeve secured to I it, and a secondsleeve sliding on it, bowed springs carrying centrifugal weights uniting the two sleeves; an angular rack carried by the sliding sleeve, indicating mechanism actuated by the said rack, clappers projecting from the sliding sleeve, and a gong located within range of the same, substantially as described.

In witness whereof I have hereunto signed my name, this 3d day of May, 1904, in the.

presence of two subscribing witnesses.

VINZENZ KOBLIZEK. Witnesses:

LUDWIG KoHN, ERNST ScHoFLEn. 

